How Jefferson Township came to be
From Wikipedia’s history of Jefferson Township.
The Big Bend Historical Area was added to the National Register of Historic Places in 1975.
Text from Wikipedia, licensed CC BY-SA 4.0.
Each edition grades its towns against each other only.
More historic than 37% of U.S. towns. What drives it
Below: maps from 1908 on and the census since 2000.
More historic than 37% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Jefferson Township is more historic than 37% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Pennsylvania towns list about as much on the Register as the country (a typical Pennsylvania town has 2.1 per 10,000 residents, the U.S. 2.4), so Jefferson Township’s 0.0 sits below most of its state (25% of Pennsylvania towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Jefferson Township’s history is told.
Every edition of the U.S. Geological Survey’s map of Jefferson Township. Tap a year, or press play to watch the town change.

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Jefferson Township.
From Wikipedia’s history of Jefferson Township.
The Big Bend Historical Area was added to the National Register of Historic Places in 1975.
Text from Wikipedia, licensed CC BY-SA 4.0.
Between 1,880 and 2,416 people in every census since 2000.
3 censuses, 2000–2020.
U.S. Census Bureau decennial counts, from the census table on Jefferson Township’s Wikipedia page.
Nobody well known was born in Jefferson Township itself, so here are the best known from just nearby.
Old hamlets and crossroads still carry their names on the map.
Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
Jefferson Township is more historic than 37% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
15% of Jefferson Township’s homes were built before 1940 (Census estimate, ±6.8 points), against a typical 18% for a Pennsylvania town; the median home was built in 1972.
What the archives can’t tell you, neighbors can.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (2), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.

1908Shenango sheet · 1:62,500